[jdom-interest] Internal DTD subset verification

[Elliotte Rusty Harold]

At 5:27 AM -0700 5/7/02, Philip Nelson wrote:
>  It would
>mean *gasp* that there exists the possibilty of a jdom document living in
>memory that could not be produced as an xml document.
>

This possibility is a major flaw in XInclude and a few other 
technologies now. It is causing implementors and users problems 
*today*. If we let it into JDOM, it will cause JDOM problems too. We 
really, really do not want to allow this.

A JDOM Document object represents an XML document. The only 
definition of an XML document is syntactic, a sequence of characters 
that adheres to certain constraints. If there is not a 1-1 mapping 
from Document objects onto well-formed character sequences, then the 
Document class does not properly model an XML document. It's 
modelling a superset of XML documents. And sooner or later (probably 
sooner) that's going to cause problems.
-- 

+-----------------------+------------------------+-------------------+
| Elliotte Rusty Harold | elharo at metalab.unc.edu | Writer/Programmer |
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|          The XML Bible, 2nd Edition (Hungry Minds, 2001)           |
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|   http://www.amazon.com/exec/obidos/ISBN=0764547607/cafeaulaitA/   |
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